package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.exception.CustException;
import com.heima.file.service.FileStorageService;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.common.threadlocal.WmThreadLocalUtils;
import com.heima.model.wemedia.dtos.WmMaterialDTO;
import com.heima.model.wemedia.pojos.WmMaterial;
import com.heima.model.wemedia.pojos.WmNewsMaterial;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.wemedia.mapper.WmMaterialMapper;
import com.heima.wemedia.mapper.WmNewsMaterialMapper;
import com.heima.wemedia.service.WmMaterialService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.swing.undo.CannotUndoException;
import java.io.IOException;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.UUID;

@Slf4j
@Component
public class WmMaterialServiceImpl extends ServiceImpl<WmMaterialMapper, WmMaterial> implements WmMaterialService {
    @Autowired
    FileStorageService fileStorageService;
    @Value("${file.oss.prefix}")
    String prefix;
    @Value("${file.oss.web-site}")
    String webSite;

    @Override       //MultipartFile 接收前端传过来的文件
    public ResponseResult uploadPicture(MultipartFile multipartFile) {
        //1.参数校验
        if (multipartFile == null || multipartFile.getSize() == 0) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID, "文件不能为空");
        }
        //1.1当前线程中获取用户id
        WmUser user = WmThreadLocalUtils.getUser();
        if (user == null) {
            CustException.cust(AppHttpCodeEnum.NO_OPERATOR_AUTH);
        }
        String originalFilename = multipartFile.getOriginalFilename();
        if (!checkFileSuffix(originalFilename)) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID, "请上传正确的素材格式");
        }
        //2.上传到oss
        String fileId = null;
        try {
            String filename = UUID.randomUUID().toString().replace("-", "");
            String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));

            fileId = fileStorageService.store(prefix, filename+suffix, multipartFile.getInputStream());
            log.info("阿里云OSS 文件 fileId: {}",fileId);
        } catch (IOException e) {
            e.printStackTrace();
            log.error("文件上传失败", e);
            CustException.cust(AppHttpCodeEnum.SERVER_ERROR, "服务器繁忙,稍后重试");
        }
        //3.封装数据并保存到素材库中
        WmMaterial wmMaterial = new WmMaterial();
        wmMaterial.setIsCollection((short) 0);
        wmMaterial.setType((short) 0);
        wmMaterial.setCreatedTime(new Date());
        //3.1设置文件id
        wmMaterial.setUrl(fileId);
        wmMaterial.setUserId(user.getId());
        save(wmMaterial);
        //3.2前端显示
        wmMaterial.setUrl(webSite+fileId);
        //4.返会结果
        return ResponseResult.okResult(wmMaterial);
    }

    /**
     * 检查文件格式 目前仅仅支持jpg  jpeg  png  gif 图片的上传
     */
    private boolean checkFileSuffix(String path) {
        if (StringUtils.isBlank(path)) return false;
        List<String> allowSuffix = Arrays.asList("jpg", "jpeg", "png", "gif");
        boolean isAllow = false;
        for (String suffix : allowSuffix) {
            if (path.endsWith(suffix)) {
                isAllow = true;
                break;
            }
        }
        return isAllow;
    }

//    /**
//     *素材列表查询
//     */
//  //  @Override
   public ResponseResult findList(WmMaterialDTO dto) {
        //1.参数校验
        dto.checkParam();
        //2.执行业务查询
        LambdaQueryWrapper<WmMaterial> wrapper = new LambdaQueryWrapper<>();
        //2.1收藏
        if (dto.getIsCollection() != null && dto.getIsCollection() == 1) {
            wrapper.eq(WmMaterial::getIsCollection,dto.getIsCollection());
        }
        //2.2当前登录用户素材
        WmUser user = WmThreadLocalUtils.getUser();
        if (user==null) {
            CustException.cust(AppHttpCodeEnum.NO_OPERATOR_AUTH);
        }
        wrapper.eq(WmMaterial::getUserId,user.getId());
        //2.3时间倒序
        wrapper.orderByAsc(WmMaterial::getCreatedTime);
        Page<WmMaterial> pageParam = new Page<>(dto.getPage(), dto.getSize());
        if(pageParam==null||pageParam.getSize()==0){
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        IPage<WmMaterial> resultPage = page(pageParam, wrapper);
        List<WmMaterial> records = resultPage.getRecords();
        for (WmMaterial record : records) {
            record.setUrl(webSite+record.getUrl());
        }
        //3.封装结果
        PageResponseResult pageResponseResult = new PageResponseResult(dto.getPage(), dto.getSize(), resultPage.getTotal());
        pageResponseResult.setData(records);
        return pageResponseResult;
    }
    @Autowired
    WmNewsMaterialMapper wmNewsMaterialMapper;

    @Override
    public ResponseResult delPicture(Integer id) {
        //1.校验参数
        if (id ==null) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
        }
        //2.业务处理
        //2.1判断当前id是否被引用,如果被使用则禁止删除
        WmMaterial wmMaterial = getById(id);
        if (wmMaterial==null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        LambdaQueryWrapper<WmNewsMaterial> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(WmNewsMaterial::getId,id);
        Integer count = wmNewsMaterialMapper.selectCount(wrapper);
        if (count>0) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        //2.2删除素材库
        removeById(id);
        //2.3删除图片oss
        fileStorageService.delete(wmMaterial.getUrl());
        //3.封装结果
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    @Override
    public ResponseResult updateStatus(Integer id, Short type) {
        //1.检验参数
        if (id==null) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
        }
        //2.更新状态
        WmMaterial wmMaterial = getById(id);
        if (wmMaterial==null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"素材信息不存在");
        }
        //2.1获取当前用户信息
        Integer uid = WmThreadLocalUtils.getUser().getId();
        if (!wmMaterial.getUserId().equals(uid)) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_ALLOW,"只允许收藏自己上传的素材");
        }
        wmMaterial.setIsCollection(type);
        updateById(wmMaterial);
        //3.封装数据
        return ResponseResult.okResult();
    }
}